diff options
Diffstat (limited to 'drivers/gpu/drm/imagination/pvr_mmu.c')
| -rw-r--r-- | drivers/gpu/drm/imagination/pvr_mmu.c | 70 |
1 files changed, 67 insertions, 3 deletions
diff --git a/drivers/gpu/drm/imagination/pvr_mmu.c b/drivers/gpu/drm/imagination/pvr_mmu.c index 7f77e03df912..b71d30e5f380 100644 --- a/drivers/gpu/drm/imagination/pvr_mmu.c +++ b/drivers/gpu/drm/imagination/pvr_mmu.c @@ -3,9 +3,11 @@ #include "pvr_mmu.h" +#include "pvr_ccb.h" #include "pvr_device.h" #include "pvr_fw.h" #include "pvr_gem.h" +#include "pvr_power.h" #include "pvr_rogue_fwif.h" #include "pvr_rogue_mmu_defs.h" @@ -95,7 +97,7 @@ static void pvr_mmu_set_flush_flags(struct pvr_device *pvr_dev, u32 flags) */ void pvr_mmu_flush_request_all(struct pvr_device *pvr_dev) { - /* TODO: implement */ + pvr_mmu_set_flush_flags(pvr_dev, PVR_MMU_SYNC_LEVEL_2_FLAGS); } /** @@ -120,8 +122,70 @@ void pvr_mmu_flush_request_all(struct pvr_device *pvr_dev) */ int pvr_mmu_flush_exec(struct pvr_device *pvr_dev, bool wait) { - /* TODO: implement */ - return -ENODEV; + struct rogue_fwif_kccb_cmd cmd_mmu_cache = {}; + struct rogue_fwif_mmucachedata *cmd_mmu_cache_data = + &cmd_mmu_cache.cmd_data.mmu_cache_data; + int err = 0; + u32 slot; + int idx; + + if (!drm_dev_enter(from_pvr_device(pvr_dev), &idx)) + return -EIO; + + /* Can't flush MMU if the firmware hasn't booted yet. */ + if (!pvr_dev->fw_dev.booted) + goto err_drm_dev_exit; + + cmd_mmu_cache_data->cache_flags = + atomic_xchg(&pvr_dev->mmu_flush_cache_flags, 0); + + if (!cmd_mmu_cache_data->cache_flags) + goto err_drm_dev_exit; + + cmd_mmu_cache.cmd_type = ROGUE_FWIF_KCCB_CMD_MMUCACHE; + + pvr_fw_object_get_fw_addr(pvr_dev->fw_dev.mem.mmucache_sync_obj, + &cmd_mmu_cache_data->mmu_cache_sync_fw_addr); + cmd_mmu_cache_data->mmu_cache_sync_update_value = 0; + + err = pvr_kccb_send_cmd(pvr_dev, &cmd_mmu_cache, &slot); + if (err) + goto err_reset_and_retry; + + err = pvr_kccb_wait_for_completion(pvr_dev, slot, HZ, NULL); + if (err) + goto err_reset_and_retry; + + drm_dev_exit(idx); + + return 0; + +err_reset_and_retry: + /* + * Flush command failure is most likely the result of a firmware lockup. Hard + * reset the GPU and retry. + */ + err = pvr_power_reset(pvr_dev, true); + if (err) + goto err_drm_dev_exit; /* Device is lost. */ + + /* Retry sending flush request. */ + err = pvr_kccb_send_cmd(pvr_dev, &cmd_mmu_cache, &slot); + if (err) { + pvr_device_lost(pvr_dev); + goto err_drm_dev_exit; + } + + if (wait) { + err = pvr_kccb_wait_for_completion(pvr_dev, slot, HZ, NULL); + if (err) + pvr_device_lost(pvr_dev); + } + +err_drm_dev_exit: + drm_dev_exit(idx); + + return err; } /** |